JP2712763B2 - Heating capacity control device for heater - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a heating capacity control device such as a hot air heater.

2. Description of the Related Art Generally, a heating capacity temperature control device of this type changes its heating capacity from strong to weak depending on a difference between a set temperature and a room temperature. In order to increase the heating capacity, heating is forcibly started at the maximum (high) heating capacity, and after the room temperature reaches the set temperature, the heating capacity (high to strong) determined by the difference between the room temperature and the set temperature.
) And heating was performed.

Problems to be Solved by the Invention However, in such a heating capacity control device, when the room is small, even when the room temperature reaches the set temperature, the user may feel cold physically. This is because at the start of heating, especially at the start of heating from low temperatures, the room is small, so even if the indoor air temperature reaches the set temperature quickly, the walls, floors, ceilings, etc. of the room with a large heat capacity are cold enough to warm up, Due to the cold heat radiation, the actual perceived temperature perceived by humans is lowered.

The present invention has been made in view of such a point, and an object of the present invention is to provide comfortable heating regardless of the size of a room.

Means for Solving the Problems In order to achieve the above object, the present invention determines a heating capacity based on an output difference between a room temperature detecting unit and a room temperature setting unit and starts heating at the maximum heating capacity at the time of starting heating. A capacity control unit, a release unit that releases when the room temperature reaches a release temperature determined based on the set temperature set by the room temperature setting unit, and a maximum heating capacity at the start of heating, and a room temperature and heating when heating is started. A release temperature correction unit that corrects the release temperature of the maximum heating capacity based on the amount of change from room temperature after a certain time from the start, wherein the release temperature correction unit has a large change in room temperature and a small heating load. It is configured such that the maximum heating capacity release temperature is corrected to a higher side as the temperature increases.

Operation In the present invention, the maximum heating capacity release temperature is set higher as the amount of change in room temperature is larger and the heating load is smaller, that is, as the room is smaller. Therefore, the smaller the room, the higher the heating temperature until the temperature becomes higher than the set temperature. As a result, even if there is cold radiation from the wall, floor, ceiling, etc., it will be possible to experience the set temperature in a short time. Heating, that is, comfortable heating becomes possible.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. In FIG. 2, reference numeral 1 denotes a room temperature detecting unit, and a voltage obtained by dividing the voltage by a room temperature thermistor 2 and a resistor 3 is an A / D converter 4.
Is converted into a digital value by the A / D converter 4 and communicated to the microcomputer 5. Reference numeral 6 denotes a room temperature setting unit. The down switch 7 and the up switch 8 are pulled down via resistors 9 and 10, respectively. A signal line a for transmitting that the down switch 7 is pressed and an up switch 8 are provided.
Are transmitted to the microcomputer 5. Reference numeral 11 denotes a pull-down resistor of the operation switch 12, and a signal line c for notifying that the operation switch has been pressed is also connected to the microcomputer 5. 13 is a load group for performing a sequence such as operation, stop, and heating of the hot air heater, and 14 is an LE indicating a room temperature and a set temperature.
It is an indicator consisting of D.

FIG. 1 is a block diagram showing the above-described circuit. Reference numeral 15 designates a heating capacity based on inputs from the room temperature detecting unit 1 and the room temperature setting unit 6, and starts heating at the maximum heating capacity when heating is started. The heating capacity control unit 16 outputs the maximum heating capacity at the time of starting the heating to the room temperature setting unit 6.
A release unit which releases when the room temperature reaches a release temperature (the set temperature itself or a temperature lower by 2 ° C. than the set temperature, for example, 2 ° C.) determined based on the set temperature set in the step 17; A release temperature correction unit that determines the size of the room and the magnitude of the heating load based on a temperature difference (amount of change) between the room temperature and the room temperature after a fixed time after the start of heating, and corrects the release temperature of the maximum heating capacity. The maximum heating capacity release temperature is corrected to a higher side as the amount of change in the temperature is larger and the heating load is smaller.

Next, the operation of the above configuration will be described with reference to the flowchart of FIG. First, when the operation switch is turned on, the initial setting value of the LED of the display 14, for example, the 20 ° C. portion is turned on, and at the same time, the room temperature (for example, 10 ° C.) detected by the room temperature thermistor 2
Flashes. Here, by operating the up / down switches 7, 8, the initial set value of 20 ° C. can be changed to a desired temperature. Then, the changed set value is lit and displayed.

After the operation switch is turned ON, heating is started at the maximum heating capacity, and after a fixed time (for example, 15 minutes), the amount of change in room temperature is determined by the release temperature correction unit 17 of the microcomputer 5. That is, when it is determined that the heating load is equal to or less than 4.5 tatami at a predetermined amount, for example, 15 deg or more as shown in FIG. 4A, even if the room temperature reaches the set temperature, the amount of change in the room temperature is abrupt. The temperature of the walls, floor, ceiling, etc. of the room is much lower than room temperature, and it is considered that the perceived temperature is low due to the influence of cooling radiation. Therefore, correction is performed by the release temperature correction unit 17 so that heating is performed with the maximum heating capacity until the temperature becomes higher than the set temperature, for example, plus 2 deg. In this case, the set temperature on the display does not change without correction.
When the room temperature reaches the set temperature plus 2 deg, the release unit 16
, The heating capacity is determined based on the difference between the set temperature and the room temperature.

Next, when it is determined that the amount of change is 10 deg or more and less than 15 deg and the heating load is 6 tatami, the maximum heating is performed until the set temperature plus 1.5 deg, and the temperature is corrected.

Further, as shown in FIG. 4 (B), the change amount is 5 deg or more to 10 de.
If the value is less than g, the temperature is corrected by plus 1 deg. If the amount of change is less than 5 deg, the temperature is not corrected.

As described above, the room temperature and the wall depend on the size of the heating load.
Even if the temperature rise between the floor and the ceiling is different and there is a difference in cooling radiation, the temperature correction value is changed accordingly, so the set temperature and the perceived temperature can be brought close to each other, realizing comfortable heating in a short time. it can.

In the above embodiment, four kinds of temperature corrections are performed for the amount of change in room temperature. However, this may be further subdivided, and the change temperature / correction temperature can be freely changed according to the heating capacity of the heater. May be. In addition, the temperature correction, that is, the release unit 16 and the release temperature correction unit 17 in FIG. 1 may be configured by a fuzzy inference unit, and may be configured as long as the object of the present invention is achieved.

Effect of the Invention As is clear from the description of the embodiment, according to the present invention, comfortable heating can be obtained in a short time without feeling cold due to cold radiation which is influenced by the size of the room. That is, the magnitude of the heating load is determined based on the value of the room temperature rise after a certain period of time from the start of heating, and heating is performed at the maximum heating capacity until the difference between the desired temperature and the sensible temperature due to the influence of cooling heat radiation is reduced. And comfortable heating can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram of a heating capacity control device for a heater in one embodiment of the present invention, FIG. 2 is a specific circuit diagram thereof, FIG. 3 is a flowchart for explaining the same operation, and FIG. And (B) are graphs showing the relationship between room temperature and the temperature of walls and the like. 1 ... room temperature detection unit, 6 ... room temperature setting unit, 15 ... heating capacity control unit, 16 ... release unit, 17 ... release temperature correction unit.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinji Kushida 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Tadanori Haneda 1006 Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-4-39514 (JP, A) JP-A-2-62252 (JP, U)

Claims (1)

(57) [Claims] 1. A heating capacity control section that determines heating capacity based on an output difference between a room temperature detection section and a room temperature setting section and starts heating at the maximum heating capacity at the time of starting heating. The release unit that releases when the room temperature reaches the release temperature determined based on the set temperature set in the room temperature setting unit, and the amount of change between the room temperature when starting heating and the room temperature after a certain time from heating start A release temperature correction unit that corrects the release temperature of the maximum heating capacity based on the correction value. The release temperature correction unit corrects the maximum heating capacity release temperature to a higher side as the amount of change in room temperature is larger and the heating load is smaller. Heating capacity control device of the heater configured as described above.